<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html 
     PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
  <title>Class: Cart</title>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <meta http-equiv="Content-Script-Type" content="text/javascript" />
  <link rel="stylesheet" href=".././rdoc-style.css" type="text/css" media="screen" />
  <script type="text/javascript">
  // <![CDATA[

  function popupCode( url ) {
    window.open(url, "Code", "resizable=yes,scrollbars=yes,toolbar=no,status=no,height=150,width=400")
  }

  function toggleCode( id ) {
    if ( document.getElementById )
      elem = document.getElementById( id );
    else if ( document.all )
      elem = eval( "document.all." + id );
    else
      return false;

    elemStyle = elem.style;
    
    if ( elemStyle.display != "block" ) {
      elemStyle.display = "block"
    } else {
      elemStyle.display = "none"
    }

    return true;
  }
  
  // Make codeblocks hidden by default
  document.writeln( "<style type=\"text/css\">div.method-source-code { display: none }</style>" )
  
  // ]]>
  </script>

</head>
<body>



    <div id="classHeader">
        <table class="header-table">
        <tr class="top-aligned-row">
          <td><strong>Class</strong></td>
          <td class="class-name-in-header">Cart</td>
        </tr>
        <tr class="top-aligned-row">
            <td><strong>In:</strong></td>
            <td>
                <a href="../files/app/models/cart_rb.html">
                app/models/cart.rb
                </a>
        <br />
            </td>
        </tr>

        <tr class="top-aligned-row">
            <td><strong>Parent:</strong></td>
            <td>
                Object
            </td>
        </tr>
        </table>
    </div>
  <!-- banner header -->

  <div id="bodyContent">



  <div id="contextContent">



   </div>

    <div id="method-list">
      <h3 class="section-bar">Methods</h3>

      <div class="name-list">
      <a href="#M000016">add_product</a>&nbsp;&nbsp;
      <a href="#M000015">new</a>&nbsp;&nbsp;
      <a href="#M000018">remove_all_items</a>&nbsp;&nbsp;
      <a href="#M000017">remove_product</a>&nbsp;&nbsp;
      <a href="#M000020">total_items</a>&nbsp;&nbsp;
      <a href="#M000019">total_price</a>&nbsp;&nbsp;
      </div>
    </div>

  </div>


    <!-- if includes -->

    <div id="section">





    <div id="attribute-list">
      <h3 class="section-bar">Attributes</h3>

      <div class="name-list">
        <table>
        <tr class="top-aligned-row context-row">
          <td class="context-item-name">items</td>
          <td class="context-item-value">&nbsp;[R]&nbsp;</td>
          <td class="context-item-desc"></td>
        </tr>
        </table>
      </div>
    </div>
      


    <!-- if method_list -->
    <div id="methods">
      <h3 class="section-bar">Public Class methods</h3>

      <div id="method-M000015" class="method-detail">
        <a name="M000015"></a>

        <div class="method-heading">
          <a href="#M000015" class="method-signature">
          <span class="method-name">new</span><span class="method-args">()</span>
          </a>
        </div>
      
        <div class="method-description">
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M000015-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M000015-source">
<pre>
   <span class="ruby-comment cmt"># File app/models/cart.rb, line 4</span>
4:   <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>
5:     <span class="ruby-ivar">@items</span> = []
6:   <span class="ruby-keyword kw">end</span>
</pre>
          </div>
        </div>
      </div>

      <h3 class="section-bar">Public Instance methods</h3>

      <div id="method-M000016" class="method-detail">
        <a name="M000016"></a>

        <div class="method-heading">
          <a href="#M000016" class="method-signature">
          <span class="method-name">add_product</span><span class="method-args">(product)</span>
          </a>
        </div>
      
        <div class="method-description">
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M000016-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M000016-source">
<pre>
    <span class="ruby-comment cmt"># File app/models/cart.rb, line 8</span>
 8:   <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">add_product</span>(<span class="ruby-identifier">product</span>)
 9:     <span class="ruby-identifier">current_item</span> = <span class="ruby-ivar">@items</span>.<span class="ruby-identifier">find</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">item</span><span class="ruby-operator">|</span> <span class="ruby-identifier">item</span>.<span class="ruby-identifier">product</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">product</span>}
10:     <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">current_item</span>
11:       <span class="ruby-identifier">current_item</span>.<span class="ruby-identifier">increment_quantity</span>
12:     <span class="ruby-keyword kw">else</span>
13:       <span class="ruby-identifier">current_item</span> = <span class="ruby-constant">CartItem</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">product</span>)
14:       <span class="ruby-ivar">@items</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">current_item</span> 
15:     <span class="ruby-keyword kw">end</span>
16:     <span class="ruby-identifier">current_item</span>
17:   <span class="ruby-keyword kw">end</span>
</pre>
          </div>
        </div>
      </div>

      <div id="method-M000018" class="method-detail">
        <a name="M000018"></a>

        <div class="method-heading">
          <a href="#M000018" class="method-signature">
          <span class="method-name">remove_all_items</span><span class="method-args">(product)</span>
          </a>
        </div>
      
        <div class="method-description">
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M000018-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M000018-source">
<pre>
    <span class="ruby-comment cmt"># File app/models/cart.rb, line 28</span>
28:   <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">remove_all_items</span>(<span class="ruby-identifier">product</span>)
29:     <span class="ruby-identifier">current_item</span> = <span class="ruby-ivar">@items</span>.<span class="ruby-identifier">find</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">item</span><span class="ruby-operator">|</span> <span class="ruby-identifier">item</span>.<span class="ruby-identifier">product</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">product</span>}
30:     <span class="ruby-ivar">@items</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-identifier">current_item</span>)
31:     <span class="ruby-identifier">current_item</span>
32:   <span class="ruby-keyword kw">end</span>
</pre>
          </div>
        </div>
      </div>

      <div id="method-M000017" class="method-detail">
        <a name="M000017"></a>

        <div class="method-heading">
          <a href="#M000017" class="method-signature">
          <span class="method-name">remove_product</span><span class="method-args">(product)</span>
          </a>
        </div>
      
        <div class="method-description">
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M000017-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M000017-source">
<pre>
    <span class="ruby-comment cmt"># File app/models/cart.rb, line 19</span>
19:   <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">remove_product</span>(<span class="ruby-identifier">product</span>)
20:     <span class="ruby-identifier">current_item</span> = <span class="ruby-ivar">@items</span>.<span class="ruby-identifier">find</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">item</span><span class="ruby-operator">|</span> <span class="ruby-identifier">item</span>.<span class="ruby-identifier">product</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">product</span>}
21:     <span class="ruby-identifier">current_item</span>.<span class="ruby-identifier">decrement_quantity</span>
22:     <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">current_item</span>.<span class="ruby-identifier">quantity</span> <span class="ruby-operator">==</span> <span class="ruby-value">0</span>
23:       <span class="ruby-ivar">@items</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-identifier">current_item</span>)
24:     <span class="ruby-keyword kw">end</span>
25:     <span class="ruby-identifier">current_item</span>
26:   <span class="ruby-keyword kw">end</span>
</pre>
          </div>
        </div>
      </div>

      <div id="method-M000020" class="method-detail">
        <a name="M000020"></a>

        <div class="method-heading">
          <a href="#M000020" class="method-signature">
          <span class="method-name">total_items</span><span class="method-args">()</span>
          </a>
        </div>
      
        <div class="method-description">
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M000020-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M000020-source">
<pre>
    <span class="ruby-comment cmt"># File app/models/cart.rb, line 38</span>
38:   <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">total_items</span>
39:     <span class="ruby-ivar">@items</span>.<span class="ruby-identifier">sum</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">item</span><span class="ruby-operator">|</span> <span class="ruby-identifier">item</span>.<span class="ruby-identifier">quantity</span> }
40:   <span class="ruby-keyword kw">end</span>
</pre>
          </div>
        </div>
      </div>

      <div id="method-M000019" class="method-detail">
        <a name="M000019"></a>

        <div class="method-heading">
          <a href="#M000019" class="method-signature">
          <span class="method-name">total_price</span><span class="method-args">()</span>
          </a>
        </div>
      
        <div class="method-description">
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M000019-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M000019-source">
<pre>
    <span class="ruby-comment cmt"># File app/models/cart.rb, line 34</span>
34:   <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">total_price</span>
35:     <span class="ruby-ivar">@items</span>.<span class="ruby-identifier">sum</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">item</span><span class="ruby-operator">|</span> <span class="ruby-identifier">item</span>.<span class="ruby-identifier">price</span> }
36:   <span class="ruby-keyword kw">end</span>
</pre>
          </div>
        </div>
      </div>


    </div>


  </div>


<div id="validator-badges">
  <p><small><a href="http://validator.w3.org/check/referer">[Validate]</a></small></p>
</div>

</body>
</html>